Electric mixer



FIG. 1 is a side elevational view of an electric mixer showing our new design, the side opposite being a mirror image;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a top plan view; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for an electric mixer, as shown and described. 